Car-truck.



GARTBUGK. APPLICATION FILED JAN. 18, 1911.

Pai-,Enma June 6, 1911.

2 SHEETS-SHEET 1.

H. C. BUHOUP.

GAR TRUCK.

APPLIoATIon ruim) 11111.18, 1911.

994,501 Patented June 6, I19111.

2 SHEETS-SHEET 2.

HNA!

'To all whom 'it may concern:

signed to 'aiford a strong,cheap structure in which the bolster is connected to the'side frames in such a manner that the elements of the truck are ref n passing STATES PATENT OFFICE.

. HARRY C. BUHOUP, 0F CHICAGO, ILLINOIS.

cani-TRUCK.

Speoication of Letters Patent.

Applicatie; mea January 1a, 1911. serial N0. 608,275.

Be it known that I, HARRY C. BUHOUP, a citizen of the United States, residing at Chicago,`in the county of Cook and State of Illinois, have invented certain new` and useful Improvements in Car-Trucks; and l dohereby declare the following to bea full, clear, and exact 4description of the invenart to which it appertains to make and use the same.

'My invention relates to the' construction of trucks for railway vehicles and is deyieldingly lieved from excessive strains wh over inequalities'in the track and the iiange Wear of the wheels is greatly decreased.

Generally stated, my invention maybe said to reslde in a-car truck in which there arej combined with the side frames, bolster and springs for yieldingly supporting" the bolster cnthe' si`deframes, devices interposed. bolster' Supporting betweenthe bolster and springs which constitute means for rinitt1'ng a yielding notary movement Yof t' e side frames with res ect to `the bolster and also f-serve as means"- or permitting the bolster to moveor oscillate in the direction of its length between the side frames.

illustrating my invention, Ithe scope whereof:`

side elevation of a car truck invention, one end of the side frame'being illustrated` as designed to receive the standf boitv of ard Master Oar Builders journal -box and a y vspecial construction being illustrated as secured tothe other end of the one side of the 'truck structure; Fig. 4; is a f detailfh'ol'lizontal 'section taken4 'on the line 1-4, Fig. l;

vatiori 'the journal `box 'bolt view `corres ondingto Eig. '3,'but'f1llfi1st'rating a modi ed constructaon.I

illustrated are designed to be tion, suchas willenable others skilledin the' of th and simple side trame by mea/ns f Fig. 4, In order that In the drawings chosen for the purpose of 1s pointed out in the claims, Figure 1 is a' embodying my glen. 1g.'

Fig. 5 is fa vertical section taken .in the yplane of the *line 5-5 Fig.

Fig-'6 .is-a detail-view showing iniside clef' retaining -def v vices'illustrated'in Fig. 5, andFigsr''is afl lLike symbols refer to like parts wherever they occur. v

I will now proceed to describe my .invention 4incre f-fully so that others skilledgin the art to which it appertains may apply the same.

As the various features of construction a plicable to both sides of the truck, it will Ibe unnecessaryto describe both sides of the structure.

` n thearticular embodiment of my invention il ustrated in Figs. 1 to 6, inclusive, egdrawin'gs, l is the side frame, 2 the bolster, and 3 the bolstersprings. The under face of the bolster 2 is preferably provided at each end with a plurality of inclined roller-bearin faces 4 which ma be conyeniently-formed as4 segments of a circular cylinder.' The form of the bolster may lbe otherwisesuch as desired, but, as shown, it is preferred-to construct it as an integral casting; 'y

Seated upon the upper ends of the bolster springs 3 which are mounted upon each side frame is a vertically movable spring cap that is maintained 1n proper relation togthe of guides 6 which project into the bolster ceived by corresponding verticallyeitending recesses formed inopposite sides of the spring cap 5, as more 1particularly shown in e side frames 1 may be capable cfa-rotary or 'turning movement with' respect to the bolster 2 so as to permit the truck to pass over high' and low joints and other inequalities in the track'without creatingundue stresses in its members, the upper faceo the sprin curved "socket 7 w ich is adapted to receive "a correspondingly curved convex member '8 plurality of cylindrical rollers-11 which en- Patentea June 6, 19,11.-

openln'gs and are recap 5 is formed with av cfa- 2()` -upon the side frame 1.

gage` and' are adapted to rollf upon the. inclined faces 4 and 10 with which the bolster and bolster-receiving member are respectively provided.

The bolster receiving member 9, which projects outwardly through the bolster opening in` the side frame and is capable of vertical movement with respect to said side frame, is provided with oppositely disposedA cylindrical guide faces 12 which, while cooperating. with the interior facesof the 'truck columns 13 to guide the bolster-2 and;

bolster-receiving member 9- vertically, also permit a turing movement of the side frame with respect thereto. Each bolster-receiving member 9 is provided with oppositcly projecting lateral' arms lt which lextend springsk 15.

The form of journal. box which it is pre'- i ferred to employ with the features ot` constructionl hitherto described is illustrated at theright hand ends of Figs. 1 and: 2, and:

also in Fig. 5. This journal box 17 is fashioned or provided with a laterally extending shank or projection 18 which fitsa correspondingly shaped socket inthe end of thev side frame, the connection ofthe journal box with the frame beinmaintained by means of- `a bolt 19, which, as more particularly shown in Fig. 5, passes through the side frame and the shank or projection of the journal box. In-order-to prevent possible loss of theV journal-box bolt; 19 when the truck is in service,'it is,

preferred to secure said bolt in position by means of a retaining bar 20, the lower. end:

of which engages the curved face of an angular -lug 21 formed on theside frame andthe upper end oflwhich is secureditofthe side frame byjmeans of a threaded bolt 22. The Master Car Builders standard` journal box may, however, be employed if desiredand in suchevent the side frame lispreferably constructed as shown at the .left hand ends of Figs. land 2, .2S-being a tie bar which passes under the journal boxes, andside frame in the usual'11121111161'A4 andthe journal boxes beingsecuredito,saidtie bar and side frame by mea-nsI of journal box bolltsin the usual way,

The side frames 1 of thetruckgarepreferably. connected by means of` tie bars 24 which are rivetedto brackets 25 with which the 'spring caps 51am-provided ortftheir inner sides. By such a constructlon the liabil- 'j ity of the truck members being distorted by the shocks and strains transmitted from one side frame to the other when the truck is in service, is greatly decreased.

For convenience of repa1rthe brakebeam nectedi4 to the side frame, the latter bein vfor that purpose provided with sockete projections 27 into: which the brake beam' hangers 26 are introducedz`from the outside of the sideframe. The4 brake bilm hangers Y are retained in, the socketsfof the projections 27 by means ot pins 2.8, as will-be readily, understood.

Im Fig. 7 is shown a. modified. form of` construction in. Which-v the channel iron tie bars 24 are dispensed with andthe connection betweenthe bolster and` bolster receiving members is such that the bolster operates to tie the two side frames together. In this Amodified `formo my invention the bolsterx receiving member 29 isl identically like. the' bolster receiving members 9 heretofore de-4 scribed, except that the roller inclines 10are omitted. and-its interior. surface is formed with a rectangular socket on'. recess 30 into.

which a downwardly, extending` rectangular proj ection. 31 formed.Y on; the under surface of the bolstery 32.Y fits.` Ifldesired, thebolsterl receiving member 29 and vbolster 32 `may be connectedby a pin 33V and cotter 34, as

shown, and such a construction not only assists in preventing. the lateral separation` ofthe side frames, but; also prevents any possibility of the disengagement ofi the pros jection 31 of the bolsterfrom its socket 30 in the bolster receivingmember. The spring cap 35 differs from the springcapsfonly by the omissionV of theV brackets. 25, such brackets being unnecessary in this modifiedform, of construction since the function performed, by the channel-'iron tie barsy 24V is performed by the bolster 32 instead. The

construction of the remaining features ofy the truck illustratedin` Fig. 7 is precisely the same as heretofore described in connection.

with Figs;- 1 tot, inclusive, of -the drawings, and, therefore, such remaining features of construction have .been` indicated by reference characters Showing. their correspondence with the` features of construction here tofore describedf When a. truck: such as shown in Figs. 1 to 6, inclusive, offthe drawings passes over a high` on low joint or other inequality in the. track, theside frame 1 rotates on the spherical bearing faces 7 and 8, thus compressing; 'one or; the other. of; the springs. 15

uponl which thearms 14 of. the bolster. re.- ceivingmember 9bear.- Aften the wheels of the truck have passedy over, the inequality in the track, the .compressed spring 15 expands, thus returning the -bolster, bolster receiv- 'hangers 26 are preferably detachably conf` ing'member and side frame to their normal positions. When the leading wheels of the truck pass onto a curve the side frame l will travel inwardly, or the bolster 2 will v travel outwardly, or both operations -may take place, thus reducing the pressure between the rails and the flanges of the wheels. When the truck passes from the curve onto straight track the side frame or bolster, or both, as the case may be, will return to their normal positions and therollers l1 will assume the relation to the inclines 4 andv 10 illustrated in Fig. 3. It will be understood, of course, that if, while passing around a curve, the truck wheels pass over any nequalities in the track the side frames 1 will rotate vertically on the spherical, bearings 7 and 8, as heretofore described.

In the construction shown in Fig. 7 the side frame l and bolster 32 are incapable'of any travel with respect to each other in the direction of length of the bolster; but the side frames are arranged to turn or rotate on the spherical bearings 7 and 8 in the same manner and :for precisely the same purposes as heretofore described in respect to the construction shown in the preceding figures of the drawings.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a car truck, the pombination with side frames, of a bolster, springs for yieldingly supportingsaid bolster on said sideframes, and'devices interposed between said springs and bolster constltutmg means for permitting a rotating movement of said sideframes with respect to said bolster and also means for permitting the bolster to move in the direction of its length between the side-frames.

2. In a car truck, the combination with side-frames, of a bolster, springs interposed between said side-frames and bolster for .supporting said bolster, spring-caps restlng upon their respective bolster-supporting springs, bolster receiving members iengaging their res ective spring-caps and movably connecte thereto, and rollers interposed be-A tween the bolster and bolster receivlng mem- .caps, and rollers interposed -between the bolster and bolster receiving lmembers, said bolster and bolster receiving members being provided with oppositely inclined faces engaging said rollers.

4. In a car truck, the combination with side frames, of a bolster, bolster receiving members supporting the bolster at its ends, bolster springs resting on each side-frame for supporting said bolster, a spring-cap interposed between the springs resting on each side-frame and the bolster receiving member at the corresponding end of the bolster, and springs independent of the bolster springs and-interposed between the bolster receiving members and their respective side-frames, the adjacent spring caps and bolster receiving members having socketed engagement ermitting a turning movement of said siderames with respect to said bolster.

In testimony whereof I aflix my signature in the presence of two subscribing witnesses.

` HARRY C. BUHOUP.

Witnesses:

' D. B. MASON,

I-I. W. STANNARD. 

